Public-key cryptography, or asymmetric cryptography is a cryptographic system that uses two keys: a public key which can be known by everyone and an associated private (secret) key held only by the owner. Cryptography is the basis for secure online communication and data transmission.
Public-Key Encryption Explained
Key pair generation: Every user produces a pair of keys consisting of their public and private ones.
Public Key Distribution: The public share a key with any whom they wish to securely communicate.
Cryptography: The sender encrypts the message form and uses public key of receiver to send it
Private key : To decrypt the message from an encrypted state, you will need a private key that is curated in your safe.
Uses of Public-Key Encryption
Applications of public-key encryption
For safe and secure communication -Messages, Mails & Data encryption.
Digital Camera — Digital camera use to take photographs of documents, whch provides proof that the document is original or not.
Web Traffic: This is used to securely send web traffic & encrypts the communication between web browsers and servers that can contains critical information like passwords or credit card numbers.
The science behind blockchain enables a database of information to be kept very securely.
Benefits of Public-Key Encryption[result]
Safety: It is secured by the means of highly complicated mathematical algorithms.
Authentication: To ensure the sender of a message is who it claims to be.
Privacy: it makes sure that the message can be decrypted solely by the receiver.
Non-repudiation — it protects that the sender cannot deny he sent a message.
Challenges and Limitations
Public-key encryption is a great tool, but like all things it has some caveats:
Managing and sharing public keys securely can be a headache.
Computation Overhead: Encrypt and decrypt operations can be computationally expensive, especially when dealing with large sets of data.
